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由 Andrew Morton 提交于
Remove all those get_bh()'s and put_bh()'s by extending lock_page() to cover the troublesome regions. (get_bh() and put_bh() happen every time whereas contention on a page's lock in there happens basically never). Cc: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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